jcsp.plugNplay
Class Nand

java.lang.Object
  |
  +--jcsp.plugNplay.Nand

All Implemented Interfaces:

CSProcess

public final class Nand

extends Object

implements CSProcess

Bitwise nands two Integer streams to one stream.

Process Diagram

    in1  _______
   -->--|       | out
    in2 | Nand  |-->--
   -->--|_______|
 

Description

The Nand class is a process which has an infinite loop that waits a Object of type Number to be sent down each of the in1 and in2 Channels. The process then calculates the bitwise NAND on the intValue() of the two Numbers then write the result as a new Integer down the out Channel.

Channel Protocols

Input Channels
in1,in2	java.lang.Number	Both Channels can accept data from any subclass of Number. It is possible to send Floats down one channel Nand Integers down the other. However all values will be converted to ints.
Output Channels
out	java.lang.Integer	The output will always be of type Integer.

Example

The following example shows how to use the Nand process in a small program. The program also uses some of the other building block processes. The program generates a sequence of numbers and calculates the negative value and prints this on the screen.

 import jcsp.lang.*;
 import jcsp.util.*;
 
 public class NandExample {
   public static void main (String[] argv) {
 
     Channel a = new One2OneChannel ();
     Channel b = new One2OneChannel ();
     Channel c = new One2OneChannel ();
     Channel d = new One2OneChannel ();
 
     new Parallel (new CSProcess[] {
       new Numbers (a),
       new Nand (a, b, c),
       new Successor (c, d),
       new Printer (d),
       new CSProcess () {
         public void run () {
           Integer nandVal = new Integer (Integer.MAX_VALUE);
           while (true) {
             b.write (nandVal);
           }
         }
       }
     }).run ();
 
   }
 
 }
 

Author:

P.D.Austin

Constructor Summary

Nand(ChannelInput in1, ChannelInput in2, ChannelOutput out)
Construct a new Nand process with the input Channels in1 and in2 and the output Channel out.

Method Summary

void	run() The main body of this process.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Nand

public Nand(ChannelInput in1,
            ChannelInput in2,
            ChannelOutput out)

Construct a new Nand process with the input Channels in1 and in2 and the output Channel out. The ordering of the Channels in1 and in2 make no difference to the functionality of this process.

Parameters:

in1 - the first input Channel

in2 - the second input Channel

out - the output Channel

Method Detail

run

public void run()

The main body of this process.

Specified by:

run in interface CSProcess